Question

an endoscopy performed on a patient with heartburn reveals abnormal tissue changes in the lower esophagus. what type of anatomy study is this? physiology cytology histology gross

Explanation:

Physiology studies functions of living organisms. Cytology focuses on cells. Gross anatomy is about the body's large - scale structures. Histology is the study of tissues. Since the question is about abnormal tissue changes, histology is the correct study type.

Answer:

C. Histology